import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/getCookie")
public class GetServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取Cookie需要使用HttpServletRequest类里面的方法
        Cookie[] cookies = req.getCookies();
        if (cookies.length == 0){
            System.out.println("Cookie为空");
            return;
        }
        for (Cookie cookie:cookies) {
            System.out.println(cookie.getName() +":" + cookie.getValue());
        }
        resp.getWriter().write("ok");
    }
}
